fix: 增强配置发布校验与关闭玩法清理提示

1. 发布赔率、玩法配置和风控封顶草稿前校验空配置、重复项、金额范围和合法性
2. 限制赔率返水与佣金比例在 0 到 1 之间
3. 投注预览和下单遇到已关闭玩法时返回需清理注项明细

app/Services/Config/RiskCapStreamService.php

@@ -9,6 +9,7 @@ use App\Services\AuditLogger;
 use App\Models\RiskCapVersion;
 use Illuminate\Support\Facades\DB;
 use App\Lottery\ConfigVersionStatus;
+use Illuminate\Validation\ValidationException;
 use Illuminate\Contracts\Pagination\LengthAwarePaginator;
 
 /** 后台：风控封顶版本（{@see risk_cap_versions} / {@see risk_cap_items}） */
@@ -97,6 +98,7 @@ final class RiskCapStreamService
 
     public function publish(RiskCapVersion $draft, AdminUser $admin, ?Request $request = null): void
     {
+        $this->validatePublishableDraft($draft);
         $before = $this->snapshotVersion($draft);
 
         DB::transaction(function () use ($draft, $admin): void {
@@ -162,4 +164,39 @@ final class RiskCapStreamService
             'items_count' => $v->items()->count(),
         ];
     }
+
+    private function validatePublishableDraft(RiskCapVersion $draft): void
+    {
+        $items = $draft->items()->orderBy('draw_id')->orderBy('normalized_number')->get();
+        $errors = [];
+        $seenKeys = [];
+
+        if ($items->isEmpty()) {
+            $errors['items'][] = '草稿至少需要一条封顶配置';
+        }
+
+        foreach ($items as $index => $row) {
+            $normalizedNumber = (string) $row->normalized_number;
+            $capAmount = (int) $row->cap_amount;
+            $drawId = $row->draw_id === null ? '__null__' : (string) $row->draw_id;
+            $key = $drawId.'|'.$normalizedNumber;
+
+            if (! preg_match('/^[0-9]{4}$/', $normalizedNumber)) {
+                $errors["items.$index.normalized_number"][] = '号码必须是 4 位数字';
+            }
+
+            if ($capAmount <= 0) {
+                $errors["items.$index.cap_amount"][] = '封顶金额必须大于 0';
+            }
+
+            if (isset($seenKeys[$key])) {
+                $errors["items.$index"][] = '同一期号与号码存在重复封顶配置';
+            }
+            $seenKeys[$key] = true;
+        }
+
+        if ($errors !== []) {
+            throw ValidationException::withMessages($errors);
+        }
+    }
 }